Girls' Generation (Korean: 소녀시대; So Nyeo Shi Dae) is a South Korean girl group formed by S.M. Entertainment in 2007. The nine member group consists of Taeyeon, Jessica, Sunny, Tiffany, Hyoyeon, Yuri, Sooyoung, Yoona and Seohyun. In Japan, they are known as Shoujo Jidai (Japanese; 少女時代). <wikipedia>